Air-compressor or vacuum-pump.



P TB ITEQA G. 4, 1908.

' E. GAUGHER.

AIR COMPRESSOR 0R VACUUM PUMP.

APPLIOATION FILED HA H. 11, 190'!- AIR-COMPRESSOR OR VACUUM-Pm.

To all whom it may concern:

Be it known that I, ELIE GAUCHER, a citizen of the Republic of France, residing at Constantinople, in Turkey, have invented a certain new and useful Improved Air-Comressor or Vacuum-Pump, of which the folowing is a specification.

This invention relates to a pump for compressing air and producin vacuum; the said apparatus compresses air by means of oil, all its parts work in the latter fluid by which they are automatically lubricated, and it does not require any attendance.

In the accombanyin drawing given merely by way of example, higure 1 is a sectional longitudinal elevation of the ap aratus. Fig. 2 is a horizontal crosssection ot the apparatus on the line A B of Fig. 1.

In the said drawing, 10 is a tank filled with oil less the volume generated by the travel of the piston. The u per wall 11 of the said tank 10 is inclined and connects the lefthand lateral wall of the said tank 10 to the left-hand lateral wall of a part 12 arranged at a higher level. The cylinder 13 wluch is closed at the top by a cover 14 provided with holes, opens at the bottom into the tank 10.

The piston 15 is constructed of two parts, the bottom one of which is convex so as to prevent any air remaining below it at the moment when the chamber 10 is filled with oil, which is done when the piston is at the bottom portion of its stroke. Moreover, the said piston 15 is rovided with two stamped out leathers held etween the two parts constituting the piston which parts are mounted on the rod 16 passing through the cover 14 with little friction. The inlet valve 17 can slide in the part 18 which forms the seat and guide. The conduit 19 is connected by screwing at the bottom to the seat-guide 1S and opens at the top into the upper portion of the cylinder 13. The discharge valve 20 is arranged in the interior of the seat 21, and its rod is guided in the part 22 screwed to the part 21. A pipe 23 is screwed into the part 22 and opens at its upper end bent downwardly into a chamber 24. The portion of the ipe 23 within the chamber 24, is closed at t eend, and rovided at the sides with small holes 25. I will be readily understood that in this wav any oil carried away, cannot escape through the up er portion of th e'. chamber 24, and reach t ie an tank, as it is l pro'ected against the walls of the chamber, to t e bottom of which it descends.

Specification of Letters Patent.

Application filed. March 11, 1907. Serial No. 361,765.

UNITED STATES PATEXr-ormcri.

ELIE exocrine, or coxsnxrmoPLE. TURKEY,

. Patented. Aug. 4, 1908.

The chamber 24 is provided with a removable bottom 26 and with a branch 27 by means of which it is connected to a chamber '28 provided with removable coveix29. The chamber 28 is of suitable dimensions to enable the pivot pin 31 for one of the ends of the lever 32, provided with a valve 33, to be mounted in it with ease. The pin 31 1s held at the upper end of a screw plug 34, and the seat of the valve 33 is formed by the up or end of a second hollow screw-plug 35. The other end of the lever 32 is connected in a suitable manner to a float 36 contained in the chamber 2-1. by a pi e 37 to an orifice 38 in the cylinder 13.

It will be readily understood that when the oil in the chamber 24 has reached a certain level the float I36 and also the valve 33 are raised and then the oil contained in the chamber constituted by 24. 27 and 28, will flow into the cylinder 13 until the float 36 and the valve 3:) have returned to their position of rest- In order that the float 36 be not deformed bv the pressure of air, it may be packed in-.

side with cork.

10 is a tube to indicate the level of the oil in the chamber 24: if it were to break the cocks 42 and -l3 would have to be at once closed.

A pipe 44 establishes a constant communi cation between the upper portions of the chamber '24 and of the chamber 28.

Alter having placed the float 36 in the chamber 2-; and mounted the lever 32, the chamber 24 and the chamber 28 are closed by putting on and bolting the bottom 26 and the cover 29. Then the cooks 42, 43 and 45 are opened, the plug 46 of the cover 29 is removed in order to put oil into the chamber constituted by 12S, 27 and 24 until the liquid has reached the float 36, whereupon the cock 4.15 is closed, and the plug 46 put back into ace.

p A check valve 47 is arranged between the chamber 24 and the branched pipe 48 which is provided with two cocks 49 and 50 connecting the compressor to the compressed:- air tank.

The chamber 51 has for its object to receive the oil which owing to high compression may pas between the walls of the cylinder 13 and the piston 15. As soon as there is an excess of oil on the up )GI face 15, the said oil escapes into the chamber 51 through the opening 52, raises the float valve The plu 35 is connectedwo 53 and is drawn into the inletpipe through the orifice 51: the said chamber 51 1s open at its upper portion.

In err er to fill the tank 10 the screwof the stro (e, and while it is in that position,

- carried away returns to the tank 10.

oil is poured on its u per portion in order to fill the top of the cy inder 13 up to the orifice 52 through-which the excess of oil will escape on to the inlet valve 17, following the pipe 19 or passing through the chamber 51 and raising the float 53 in the said chamber. In that case the oil escapes through the pipe 60 and rises again through the pipe 61. This arrangement is specially useful when the apparatus is utilized for producing vacuum in which case the cock 58 is closed while the cock 57 is opened. In these conditions, in spite of the cock 58 being closed, the oil Then the iston 13 is lowered to the bottom of its stro e and it is ascertainedthrough the orifice of the nozzle 56 whether the Oil does not rise up to the latter. If not, then more oil is poured in, until it overflows, and then the screw-threaded cap 55 is replaced.

If it is merely desired to have compressed air, the cock 57 is closed, and the cook 58 o ened. The suction takes place at the top 0 the cylinder 13 through the orifice 52. The compressed air will be forced into the tank through one of the cocks 49 or 50, the one not used being closed.

If it is-ilesired both to reduce a vacuum and to compress, the coc 58 is closed, the pipe 62 of the cock 5'7 connected to the tank in which vacuum is to be produced and the said cock 57 is opened.

The oil carried away by the air discharged, is collected by the chamber 24, and whenthe oil reaches a certain level, it will raise the float 36 flow to the upper portion of the c linder 13 and thence into the ipe 19 above t 1e valve 17, so that when the atter is lifted oif its seat owing to the suction of the piston 13, the oil comes in first, and the air afterwards. In that way the oil is automatically returned into the tank 10in which no clearance is ever formed;

It must be pointed out that all the parts of this apparatus subject to friction, are always lubricated by the oil which is constantly circulating.

What I claim as my invention and desire to secure by Letters Patent is:-

1. A combined air compressor and vacuum s a 1 3 1ripmp comprising in combination, a tank led with oil or the like, a cylinder comtween said cylinder and cock and between said cock and said suction valve, a vacuum extension for said suction pipe provided with a cock and adapted for connection with a vacuum tank, a discharge pipe connected with said oil tank and provided with a discharge valve at its tank terminal, a float chamber partially filled with oil and connected with the other terminal of said discharge pipe, a pipe connecting said float chamber with the upper end of said 0 linder and adapted to provide a supply of oil to the upper end of said piston, a valve for the chamber terminal of said pipe, a float in said chamber controlling said valve, and a compressed air ipe leading from said float chamber and provided with a non-return valve. I

2. A combined air compressor and vacuum Jump comprising in combination, a tank iilled with oil or the like, a cylinder communicating with said tank at its lower end and provided with an air inlet at its upper end, a driven piston for said cylinder at all times engaging the oil in said tank on its lower end and being covered with oil on its upper end, a suction ipe connecting the upper end of said cylim or with the upper portion of said tank, a suction valve at the tank terminal of said pipe, a cock for said suction ipe located between said terminal valve amFsaid cylinder, a vacuum extension for said suction pipe provided with a cock and adapted for connection with a vacuum tank, a discharge pipe connected with said oil tank and provided with a discharge valve at' its tank terminal, a float chamber partiall filled with oil and connected with the ot ier terminal of said discharge pi e, a pipe connecting said float chamber wit 1 the upper end of said cylinder and adapted to provide a supply of oil to the upper end of said piston, a

bination, a tank filled with oil or the like, a

cylinder conmmnicating with said tank at 1ts lower end and provided with an air inlet at its u no! end a driven iston for said cylinder engaged by the oil on its lower end upper end of said cylinder with the upper l a discharge valve at its tan terminal, a

portion of said tank, a suction valve at the E tank terminal of said pipe, a discharge pipe 1 connected with said tank and rovided with float chamber partially filled with oil and connected with the other terminal of said discharge pi e, a pipe connecting said iloat chamber int i the upper end of said cylinder to maintain a suppl of oil on the upper end of said piston, a va ve for the chamber ter- 5 minal of said pipe, a float in said chamber controlling said valve, and a compressed an pipe leading from said float chamber and provided with a non-return valve. 1 4. An air compressor COIIIPII ng in combi- 5 nation, a tank 'illed with oil or the like, a l cylinder communicating with said tank at 1 its lower end and provided with an air inlet l at its upper end, a driven piston for said cyl- '1 inder engaged by the oil of said tank at all times, a suction pipe connecting the upper end of said cylinder with the upper portion of said tank, a suction valve for the tank terminal of said pipe, a discharge pipe connected 'ith said tank and provided with a discharge valve at its tank terminal, a chamber p'artiall filled with oil and connected with said discharge pipe and the upper end of said cylinder, means disposed in said I. chamber for controlling the supply of 'oil therein to said cylinder, and a compressed air pipe leading from said chamber and provided with a non-rcturn valve.

5. a combined air compressor and vacuum pump comprising in combination, a tank into said tank at its lower end and provided with an air inlet at its upper end, a driven piston for said cylinder engaged on its lower end at all times by the oil from said tank, a

l i l filled with oil or the like, a cylinder opening i I l l suction pipe provided with a valve and a cock and connecting the upper portion of said tank with the upper portion ofsaitLeyli5 inder, a vacuum extension pipe connected with said suction pipe and provided with a 3 cock, a discharge pipe connected with said tank and provided with a valve, a chamber partially tilled with oil and connected with said discharge pipe and the upper end of said cylinder, means disposed in said chamber for controlling the supply of oil therein to. the upper end of said piston, and a compressed air pipe leading from said chamber.

6. An air compressor comprising in combination, a tank tilled with oil or the like, a cylinder communicating with said tank, a

driven piston for said cylinder engaged by the oil of said tank, a suction pipe connecting the upper end of said cylinder with said tank, a discharge pipe connected with said tank, a. chamber partially filled with oil and connected with said discharge pipe and having a. separate connection with the upper end of said cylinder, a compressed air pipe connected with said chamber, and means disosed in said chamber for controllin the l I n I b supply of oil therein to said cylinder.

7. An air compressor comprising in combination, a tank partlyfilled with oil or the like. a cylinder communicating with said tank, a piston -for said cylinder engaged by the oil of said tank on one of its faces, means for covering the other face of said piston with oil and means for carrying off an excess of oil from said other face of said piston.

In testimony whereof I have aflixed my signature, in presence of two subscribing witnesses.

ELIE GAUCHER.

-- 'itnesses:

A. LEDESCHI, J. I. Ammo. 

